Music Reference RM9 - user comments please


I am considering of getting a used RM9 for my Merlin-TSM, can any user of the amp comments.
vintage
I have sold my RM10 and a RM9 MKII is on the way. I am very interested to see how it compares with my CAT JL2 - it owuld be nice to go from 16 output tube to 8; if the sound is of comparable performance.
The two front driver tubes will have a audible effect on sound quality. I've settled on NOS Amperex orange globe (Holland) a-frame 6dj8. Very smooth but still detailed.
I used the 6N23P tubes as well. Well worth it sound wise and very inexpensive. Otherwise the Siemens NOS worked for me too.